Threading device for shuttles.



M. SGHOENPELD.

THREADING DEVICE FOR $HUTTLES.

APPLICATION FILED JAN.6,1909.

920,397, Patented May 4, 1909.,

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M. SGHOENFELD.

THREADING DBVIGE FOB, SHUTTLES. APPLICATION FILED JAN. 6, 1909.

920,397. Patented May 4, 1909.

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THREADING mzvmz FOR SHUTTLBS.

APPLICATION FILED JAN. 6, 1909. 920,397, Patented May 1909.

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hlOBRIS SGHOENFELD, 0F ROBSGHAGH, SWITZERLAND.

THREADTNG DEVICE FOR- SHU'ITLES.

Application filed January 6, 1909.

Specification of Letters Patent.

Patented May 4-, 1909.

Serial No. 470,984c.

To all whom it may concern:

Be it known that l, l tlORRIS SoIroENFELn, a citizen of the United States of America, residing at Mariabergstrasse, Rorschach, Switzerland, have invented certain new and useful Improvements in l.hrcading Devices for Shuttles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this s 'icciiication.

My invention relates to improvements in automatic devices for threading emln'oiderymachine shuttles having thread-hole or eye in their wall. Prior devices of this description possess a reciprocatmg shuttlc-bed to receive the shuttle to be threaded, and a reciprocatory hook to draw out the thread, which hook, when the shuttle is brought with its thread-eye into the path of the said. hook, can enter the eye seize the thread and draw it through the eye in the shuttle wall to the outside. My new device differs from such prior constructions, inasmuch as it is provided with means for reciprocating the slide simultaneously with the shuttle-bed, and with means for forwardly oscillating the hook at the commencement of the return motion of the shuttle-bed and slide, so as to cause it to enter the shuttle, and for subse quently retracting it from the shuttle.

One form of construction of the invention is illustrated by way of example in the accompanying drawings, in which-- Figure 1 is a side elevation, and Fig. 2 a section on the line AB 01 Fig. 1, looking toward the right-hand side. 3 is an elevation and part section of the device seen from the opposite side to that shown in Fig. 1, the parts, moreover, being in another position. llig. 4 is a plan of Fig. 3, partly in section.

1 is a stationary guideway, secured to an embroidery-machine, and in which there travels a slide 2. The latter receives a reciprocatory motion from a cam l, mounted on the drivin -shaft 3 and actuating a pivotal lever 5, having a roller 6, which bears against the periphery of the cam, and connected at the top by a link 7 to a rigid arm 9, pendent from the slide. The shuttle-bed 10 is secured to the slide 2. 11 is a bracket, also secured to this slide, and in the projecting limb of the bracket there is mounted an axis 12, which carries a crank 13 at one end and an arm 14 at the other end. The crank 13 is furnished with a roller 13 The arm 14, and also the crank 13, are under the influence of a torsion-spring 15. The free end of the arm 14 is provided with a clamp 16, adapted to grip the thread-hook 1'7. Higidly secured to the guideway 1 there is an upright 18, whose top end carries a rail 19 lying parallel with the horizontal plane of the slide 2. The rail 19 has a gap g, which. constitutes a curved track. To the rail 19 there is secured a small bracket 20, to which there is pivoted at 22 an oscillating switch 21, controlled by a torsion-spring L3.

The operation of the device is as follows At the commencement of working the various operative parts occupy the position shown in Fig. 1. After a shuttle has, by suitable means, not illustrated in the drawing, been introduced into the bed 10, the slide 2, together with the bed 10, bracket 11, etc., is caused to travel in the direction of the arrows (Fig. 1). During such motion the roller 13 which rests 011 the top edge of the rail 19, will run over the switch 21. Fr hen the slide 2 has moved in the direction already mentioned so far that the roller 13 has passed the fulcrum oi the switch 21, the latter will turn in counterclockwise direction. Owing to further advance of the roller 13, the gap 3 in the rail will be closed by the switch 21. W hen the slide 2 has reached the end oi its ourney, the roller 13 of the crank 13 will occupy substantially the position Since the switch 21 is now released, it will return to its former, i. 0. its initial position, again, owing to the action of the spring 23, so that the gap 3 is. again. uncovered. During this procedure the shuttle has been so disposed in the shuttle-bed, by mechanisms not illustrated in the drawings and not forming any part of the present invention, that it only remains for the hook 17 to complete its operation. This is effected by the slide 2 commencing its return-motion in direction counter to that of the arrows. 11 with its arm 14 and roller 15 will naturally move in the same direction and the latter will again run along the rail 19. Since, however, the arm 14 and crank 13 are under the action of the spring 15, the roller 13, on further return-motion of the slide 2, will follow the curved track of the open gap y of the The bracket i rail 19, and the arm 14 with hook 17 will consequently execute an oscillatory motion in the direction of the arrow. The shuttle 25, furnished with bobbin 24, is located in the shuttle-bed 10, with its eye exactly opposite the hook, which is on the point of entering it, so that the hook can pass through the eye, [or the pur ose ol drawing out the thread-end 26, which ies there ready to be seized (Figs. 3 and 4). Owing to the shuttle-bed and the thread-hook being mounted on the same slide, it is unnecessary, as in prior constructions is the case, that the shuttle-bed should remain at rest during the period when the hook is passing through the shuttle-wall for the pur ose of drawing out the thread-end: the llOOC can also enter the shuttle during motion of the shuttle-bed.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is:

1. An automatic device for threading the shuttles of embroidery machines, comprising, a sliding shuttle-bed adapted to receive a shuttle presenting a thread-eye, a slide presenting an oscillating thread-hook, means for reciprocating the slide simultaneously with the shuttle-bed, and means for forwardly oscillating the hook at the commencement. of the return-motion oi the shuttlebed and slide, so as to cause it to enter the shuttle, and for subsequently retracting it i from the shuttle, substantially as described.

2. An automatic device for threading the shuttles o'l' embroidery machines, comprising, i a slide, and a shuttle-bed adapted to receive a shuttle presenting a thread-eye, and an i oscillating thread-hook, both carried by the 1' slide, means ior reciprocating the slide, and E means for forwardly oscillating the hook at the commencement of the return-motion oi. the slide, so as to cause it to enter the shuttle, and for subsequently retracting it from the shuttle, substantially as described.

3. An automatic device for threading the shuttles oi embroidery machines, comprising, a slide, a shuttle-bed carried by the slide and adapted to receive a shuttle presenting a thread-eye, a stationary track presenting a curved portion, a pivotal spring-actuated switch bridging the curved portion of the track, and a spring-actuated oscillatory thread-hook holder, carried by the slide and presenting an arm, which in. the one dired tion of motion passes over the switch, and in the reverse direction of motion passes over the curved track-portion, whereby the hookholder is oscillated and. its hook caused to i enter into and then recede from the shuttle, substantially as described.

In testimony that I claim the foregoing my invention, I have signed my name in presence of two subscribing witnesses.

MORRIS SUHOENFELD.

\Vitnesses: V 7 CAESAR Loan, 1 CARL C. DUBLER. 

